Excellent article, but the closing section, Human Evolution, does not go clearly far enough in terms of the implications of genetic imperative and uniquely human _deliberative capability_: It is my argument that what you identify as 'group' is inevitably and ineluctably to be supplanted by what can only be identified as _the human life-form_ -and wholly interdisciplinarily so across all hard and soft sciences as known today. The 'evolution' of this argument is the basis of a short paper presented in 2007 at the ICAPE conference of economists in Salt Lake City and the AAAS conference in Boise, Idaho. Below are the abstract and URL of that paper.

[ABSTRACT]Because of evolutionary origin as 'a warm-blooded, primitively cerebrating vertebrate', man cannot have 'divined' the eventual evolution of his uniquely human 'deliberative capability' and its consequences. What has developed consequently -'evolved', is that man has learned how to 'facilitate' his existence -with what we call 'technological advances', before discovering the consequences of such 'facilitation out of ignorance' -that, in particular, he would some day -and inevitably, come to regret how he had both lessened the duration and worsened the very nature of his existence on earth through war, waste and the corruption of 'pre-sapiens natural dynamics' -overpopulation, pollution, global warming and econiche die-offs -worsening human existence.~~~~~~~~~~~~Economics has evolved out of fundamentally natural mechanisms of human diasporation and eventual trade. For the greater part of history, these mechanisms were more or less satisfactory in the sense that it was not intellectually yet possible to foresee problematic consequences arising from underlying physiological dynamics. Economics and economic theory, in this respect, have evolved as less concerned with such consequences than with 'invisible hand's, 'economic growth' and abstract market properties more or less ignorantly conjured into 'existence and importance'. Critically missing in this then is any reference to man's expressly physiological nature -and to that aforementioned 'deliberative capability' in particular -to the inevitability, in other words, of his increasingly deliberated and 'scientifically meliorated' influence on what is a closed-earth system in favor of 'life-form best longevity'.

There is a 'mantra' to this, and it is-least population of least resource/environment corruption.~~~~~~~~~~~~